Under the deal, Dassault will make a tender offer for Accelrys, paying $12.50 per share of ACCL stock. That represents a premium of 29% over the $9.72 per share closing price for ACCL stock on Wednesday. Accelrys has about 2,000 customers, including major drug manufacturers Pfrizer (PFE) and Sanofi (SAN), Bloomberg notes.